Improvement in dredging-buckets



6.1. SANDS. Dredging-Bucket.

Patented Oct. 26, 1875.

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N.PETERS. PHOTO LITHOGRAPNEE WASHINGTON. D c.

UNITED STATES PATENT 'OEEI E CHARLES J. SANDS, OE BROOKLYN, NEW YORK,'ASSIGNOR OF ONE-HALF HIS RIGHT TO JOHN B. WOOD, OF SAME PLACE. V

IMPROVEMENT IN DREDGING'BUCKETS.

Specification forming part of Letters Patent No. 169.299, dated October26, 1875; application filed Sept mber 22, 1875.

letters of reference marked thereon, making a part of thisspecification.

This inventionis in the nature of an imp'rovement in dredging-buckets;and the invention consists in a dredging-bucket constructed with asupporting-frame provided with a device that shall hold or anchor theframe to the bottom that is being excavated.

1n the accompanying sheet of drawings, Figure 1 is a side view of myimproved dredging-bucket; Fig. 2, an end View, showing anchoring device;and Fig. 3, a side view, partly in section, showing bucket open.

Similar letters of reference indicate like parts in the several figures.

The bucket hereinafter described is .designed more particularly to beused in dredging out clay, sand, and other hard and compact ground. Tothat end I construct the supporting-frame A of my bucket with a device,B, which, in this instance, is formed by arms at, extending at asuitable angle or curve from that part c of the frame which projectsbelow the guide-poles b. To the extremities of these projecting arms a,and extending from one to the other, is secureda plate, (1, the loweredge of which has formed upon it, or attached to it, a series of teeth,0, projecting downward. To the frame A, and on the side opposite to theradial arms a, are affixed, by means of pivotal bolts f, the lugs g, bymeans of which the bucket O is secured to the supporting-frame. Theselugs are affixed to the upper edge of the bucket, on each of its sides,and in the rear of a central point, measuring from the front to the rearend of the bucket. The bucket itself is of quadrant form,'and its frontedge may be armed with teeth, or otherwise provided with devices for thebetter scraping up of the hard ground when it comes in contact with thesame. Passing from one side of the frame A to the other, and resting insuitable bearings, is a shaft, D. To this shaft is properly secured, atits center, a large pulley-wheel, h, and also affixed to this shaft,near the inner sides of the frame, are two smaller pulley-wheels, a; i;and secured in any desirable manner to the arms a, so as to turn freelyon central bolts or axes j, are two pulley-wheels, k 70. To the span 1,immediately above the large pulley-wheel'h, are affixed on each side twopulley-wheels, m. To the large pulley-wheel h is secured one end of adraw-chain, n, which passes around a groove formed in the periphery ofthe wheel, and the other end of the chain passes upward, coming incontact with one of the pulley-wheels m,- and to the rear end of thebucket O near the upper edge of the same, is affixed the end of adraw-chain, o, and this also passes upward in contact with the otherpulley-wheel m. To the small pulley-wheels it are secured the ends ofdraw-chains r and 1". These chains pass from the pulley-wheels to andaround the pulley-wheels If) k, and thence to the upper edge of thebucket 0, near the front end of the same, where the other ends of thedraw-chains 1' i" are secured.

Now, my bucket being constructed substantially as above described, itsoperation is as follows: When the-bucket is lowered through the water tothe groundit is designed to dredge, the force of impact drives the teeth0 into the ground, firmly holding the supporting-frame I anchored to theground, the bucket G being opened before the bucket is lowered. Then,suitable power being applied to the drawchain at, the pulley-wheel h isrevolved,-causing the shaft D to likewise revolve, which forces aroundthe pulley-wheels t c, and these pulley-wheels, as they revolve, carryaround with them the draw-chains 1' r, hauling in, by this operation,the bucket O, the edge of which is resting upon the ground 5 and as thebucket is thus drawn inward it scrapes and gathers up the ground, andthis scraping operation is continued until the lower edge of the buckettravels or swings entirely under the frame, when its edge will passunder the teeth 0, disconnecting them from their holes in the ground.The bucket being now filled with material by this operation, it israised by the draw-chains n and o to the desired height for discharging,

i the draw-chains, durin the hoisting operation,

in which position it is maintained until it is "bucket constructed as Ihave described it will be particularly efficacious for dredging hard,

theframehof the bucket being firmly anchored, the entire force of theengine may be applied *to a single bucket, which, in addition to the 4enabled to scrape up-the clay, &c., and be filled expeditiously, andwith great facility.

was by this construction all the material which "isscooped up by it willbe retained, which, when dredging sand and silt, will be of greatkeeping; the bucket tightly closed. The bucket is discharged by slackingthe draw-chain n and hauling taut the draw-chain 0, which operationopens the bucket to its fullest extent,

again lowered and filled, in the manner here inbefore described.

If desired, an apron, E, may extend across from arm to arm a,immediately above the teeth 0, which will tend to serve as a fender, andprevent the ground, as it is scraped out, from being forced away fromthe bucket, the apron keeping it in place until the bucket has scoopedit up. It will also serve to keep the a load in the front end of thebucket from being washed out.

From the foregoing it is obvious that a unyielding ground, such asclay,sand,&c.; for,

leverage obtained by reason of the fixedness of thefi'ame to the ground,the bucket will be A very great advantage is had by using a bncketmadeof a single receptacle, inasmuch importance, there, being no opportunityfor the sandand light material to leak out through joints or otherwise.

I Having thus described my invention, what I claim as new, and desire tosecure byLetters Patent, isv 1'. The supporting-frame of adredging-bucket, constructed to anchor or hold said frame to the ground,substantially in the manner and for the purpose described.

2. The combination of a; dredging-bucket with a holding or anchoringdevice secured to the supporting-frame, substantially in the manner andfor the purpose described.

3. In a dredging-buckemthe holding or anchoring device thereof,constructed with a series of projecting teeth, substantially as and forthe purpose described.

4. In a dredging-bucket, the combination of a central pulley-wheel withtwo or more pulley-wheels afiixed to the armsof the anchoring device,substantially as shown and described. i v

5. In a dredging-bucket, the combination of an anchoring device with anapron, substantially as and for the purpose described.

6. A dredging-bucket constructed of a single undivided receptacle, withclosed and unadjustable bottom, and secured to a supporting-frame by,and turning on, pivotal bolts,

substantially in the manner and for the purposedescribed.

CHAS. J. SANDS.

Witnesses:

H. L. WACIJTENBERG, M. LovELL.

